The "Rule of 72" says that, at 6% interest, money will double in 14 years. O True O False

Using the rule of 72, approximately how many years are needed to double a $100 investment when interest rates are 5.25 percent per year? (Round your answer to 2 decimal places.)

Find the principle if the interest amount at the end of 2.5 years is $450 for a simple interest rate of 10% per year.

11. You deposit $1,000 today, $3,000 two years from now, and $5,000 five years from now. How much money will you have at the end of year 5 if the annual compound interest rates for each year are predicted to be different and shown in the table below? Year Interest rate 1. 2 3 4 5 5% 10% 15% 15% 20%